moothefish
Member
I've actually just done this with a 575 and a Performa 5300 logic board. You basically have to perform the takky mod process on the 575 chassis, and swap the edge connector/wiring harness from the donor machine into the 575. Not a reversible process since you have to cut away (or rather crumble away) various bits of plastic and cut new slots to mount the new edge connector further into the chassis (even then, the board does stick out the back approx 1cm or so). 3.3v mod isn't required depending on the board you use, in my case the system works without it and I don't have any expansion cards that need it.
I haven't yet gotten the speakers or front panel buttons to work since I couldn't find any pinouts/wiring diagrams for the 575 front panel board (different from the CC one), but the audio output on the back at least works for now
This came about because in my years long quest to find a complete working 575, I ended up with two 575 shells with battery-eaten logic boards, and since everyone steals their damn boards for their CCs, i've not been able to find a replacement original board for anything close to a sensible price. Recently I acquired a Performa 5300 with a very tired CRT and a hole in the side of the case, so figured I would try and at least make something from the 3 machines. (would still love to have a working 68k 575 since its one of my favourite macs, so if you have a board you want to get rid of, I can assure you it won't end up in a CC like most others..lol)
I haven't yet gotten the speakers or front panel buttons to work since I couldn't find any pinouts/wiring diagrams for the 575 front panel board (different from the CC one), but the audio output on the back at least works for now
This came about because in my years long quest to find a complete working 575, I ended up with two 575 shells with battery-eaten logic boards, and since everyone steals their damn boards for their CCs, i've not been able to find a replacement original board for anything close to a sensible price. Recently I acquired a Performa 5300 with a very tired CRT and a hole in the side of the case, so figured I would try and at least make something from the 3 machines. (would still love to have a working 68k 575 since its one of my favourite macs, so if you have a board you want to get rid of, I can assure you it won't end up in a CC like most others..lol)